Does a cruciate ligament rupture always require surgery?

Not necessarily. Some mild or chronic cases can be managed conservatively to improve symptoms. However, most complete ruptures or cases with significant joint instability are best assessed by a surgeon with imaging to determine whether surgery is appropriate. Please consult your vet.

How long does recovery usually take before my pet can walk normally again?

Early partial weight-bearing after surgery is often encouraged, but bony healing and full functional recovery typically takes 6–12 weeks. Complete recovery may take several months depending on the individual and the surgical technique used. Follow your vet's and physiotherapist's recommendations for check-ups.

Is rehabilitation needed after surgery?

Most animals that undergo surgery are recommended to follow a rehabilitation programme to rebuild muscle strength and restore joint function. The programme will be tailored to your pet — please ask your vet or a veterinary rehabilitation specialist for an individualised plan.

How can I keep my pet comfortable at home while they are in pain?

Restrict jumping and running as much as possible. Provide a stable, non-slip resting surface. Keep the affected limb clean and avoid unnecessary handling that causes discomfort. If symptoms persist or worsen, seek veterinary attention promptly.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

Cranial Cruciate Ligament Rupture in Dogs & Cats: Symptoms, Diagnosis & Treatment [2025]

Cranial cruciate ligament rupture is one of the most common causes of hind limb lameness in dogs. Small breeds may be managed conservatively, while large breeds typically require surgery to stabilise the joint.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

Pethealthmap Editorial Team

Sources: ACVS, National Taiwan University Veterinary Hospital

When to See a Vet

Seek Emergency Care Immediately

•Unable to stand or bear any weight on the limb persistently
•Intense crying or continuous whimpering that cannot be consoled
•Affected limb visibly swollen and warm, painful to the touch, and completely immobile

Schedule a Clinic Visit Soon (within 24–72 hours)

•Intermittent hind-limb lameness lasting more than 48 hours
•Visible signs of pain or avoidance when rising or jumping
•Decreased activity level, no longer playing, or reluctance to exercise

01What symptoms indicate something is wrong?

Cruciate ligament injury commonly causes hind limb lameness and pain that tends to worsen during movement or weight-bearing.

Lameness in one or both hind limbs, which may be intermittent
Worsening pain when rising, running, jumping, or climbing stairs
Holding the affected leg up or refusing to bear weight on it
Reduced activity, reluctance to play, or general lethargy
Occasional swelling, joint instability, or tenderness around the affected joint

Seek emergency care immediately if you notice the following symptoms:

⚠️ Complete inability to bear weight or touch the limb to the ground
⚠️ Persistent severe pain or inability to stand
⚠️ Obvious swelling, heat, and severely restricted movement in the affected limb

02How to assess the situation at home and decide when to seek emergency care

Observing and documenting key information at home helps your vet make a faster assessment and plan the right investigations.

Record front-on and side-on videos of your pet walking or trotting on a smartphone
Note when the symptoms first appeared and how they have changed over time
Observe whether appetite, alertness, and toileting habits are normal
Record any recent changes in body weight
Note which movements trigger or worsen the lameness
If pain is obvious, take close-up photos of the affected limb for reference

03How will the vet make a diagnosis? Common tests and examinations

Your vet will combine a physical examination with imaging to assess the ligament and joint, and then determine the most appropriate treatment approach.

Physical examination

assessment of joint stability, range of motion, and pain response (including the cranial drawer test)

X-rays

to rule out fractures, evaluate joint degeneration, or identify arthritic changes

Ultrasound or MRI

for detailed evaluation of soft tissue and ligament structures

CT scan

used in complex cases or for precise pre-surgical planning

Blood and biochemistry panel

pre-operative health screening and anaesthetic risk assessment

04Treatment and aftercare: medication, dietary changes, and home management

Treatment can be conservative or surgical. Post-operative protection and rehabilitation are critical to restoring full function.

Conservative management: restricted activity, weight control, and pain management (as directed by your vet)
Surgical options: procedures to repair or reconstruct joint stability, chosen based on the individual patient and body size
Post-operative wound protection and restriction of jumping and vigorous activity for a defined recovery period
Long-term weight management and dietary adjustments to reduce stress on the joint
Scheduled follow-up appointments, imaging reviews, and rehabilitation as recommended by your vet

05What to prepare before your vet visit: key information to help your vet diagnose faster

Bring videos of your pet walking (both front-on and side-on)

Write down when symptoms first appeared and how they have progressed

List all current medications and supplements

Note recent changes in appetite, water intake, and toileting

Bring any previous imaging results or medical reports if available

Use a secure carrier to transport your pet and avoid handling that could cause further injury

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.